Interconnecting building blocks

Details Interconnecting building blocks Interconnecting building blocks

1978-02-10

1980-05-13

Pitrelli, John F.

A63H 3308

Patent

active

042021316

ABSTRACT:
A toy block unit having a central hub and at least three attachment arms extending outwardly along non-parallel axes projecting from the central hub. At least one of the axes projects out of the plane defined by the other axes. The attachment arms are dimensioned for interconnection with identical arms on adjacent block units, to allow the construction of three-dimensional structures.

REFERENCES:
patent: 1894605 (1933-01-01), Wright
patent: 1898297 (1933-02-01), Fox
patent: 2020562 (1935-11-01), Miller
patent: 2247614 (1941-07-01), Lingenfelter
patent: 2472363 (1949-06-01), Blackinton
patent: 3372936 (1968-03-01), Sanson
patent: 3678613 (1972-07-01), Geymeier
patent: 3791090 (1974-02-01), Kniefel
patent: 3919785 (1975-11-01), Generaux
patent: 4007555 (1977-02-01), Sasaoka

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